Anyone remember the episode where Fred and Barney take Wilma and Betty to Bedrock Amusement Park and end up touring the country after Fred records the song "Listen to the Rocking Bird" at a record making machine?

Fred leaves the record and a teenager takes it to a record company. Fred is then dubbed "Hy Fye." They travel all over the country for concerts. But Wilma and Betty are getting tired and bored of being on the road, so they start a rumor that Hy Fye is a square. So that ends Fred's brief reign as a teen idol.